Archimedes Quiz: Can You Pass This Test?

1. Based on Archimedes formula: If you drop wood into water, buoyancy will keep it afloat.

True

False

According to Archimedes' principle, when an object is submerged in a fluid, it experiences an upward buoyant force equal to the weight of the fluid it displaces. In the case of wood being dropped into water, the wood is less dense than water, so it displaces an amount of water equal to its own weight. This displacement creates an upward buoyant force that is greater than the weight of the wood, causing it to float. Therefore, the statement that buoyancy will keep wood afloat when dropped into water is true.

Explanation

According to Archimedes' principle, when an object is submerged in a fluid, it experiences an upward buoyant force equal to the weight of the fluid it displaces. In the case of wood being dropped into water, the wood is less dense than water, so it displaces an amount of water equal to its own weight. This displacement creates an upward buoyant force that is greater than the weight of the wood, causing it to float. Therefore, the statement that buoyancy will keep wood afloat when dropped into water is true.

2. Archimedes was born in ANSWER on the eastern coast of Sicily and educated in Alexandria in Egypt.

Noto

Syracuse

Sortino

Archimedes was born in Syracuse, which is located on the eastern coast of Sicily. He was then educated in Alexandria, Egypt.

Explanation

Archimedes was born in Syracuse, which is located on the eastern coast of Sicily. He was then educated in Alexandria, Egypt.

3. The Upthrust of the body is equal to the

Weight of the liquid displaced

Density of the liquid

Weight of liquid

Mass of liquid

The upthrust of a body is equal to the weight of the liquid displaced. This is known as Archimedes' principle. When an object is submerged in a fluid, it experiences an upward force called upthrust or buoyant force. This force is equal to the weight of the fluid that is displaced by the object. Therefore, the correct answer is "Weight of the liquid displaced."

Explanation

The upthrust of a body is equal to the weight of the liquid displaced. This is known as Archimedes' principle. When an object is submerged in a fluid, it experiences an upward force called upthrust or buoyant force. This force is equal to the weight of the fluid that is displaced by the object. Therefore, the correct answer is "Weight of the liquid displaced."

4. Upthrust of water acting on a wooden cube of sides 10cm immersed completely in water is

5 N

4 N

6 N

8 N

10 N

The upthrust of water acting on a wooden cube that is completely immersed in water is equal to the weight of the water displaced by the cube. According to Archimedes' principle, the upthrust is equal to the weight of the water displaced, which is also equal to the weight of the cube. Since the cube is completely immersed in water, its weight is equal to the upthrust, which is 10 N.

Explanation

The upthrust of water acting on a wooden cube that is completely immersed in water is equal to the weight of the water displaced by the cube. According to Archimedes' principle, the upthrust is equal to the weight of the water displaced, which is also equal to the weight of the cube. Since the cube is completely immersed in water, its weight is equal to the upthrust, which is 10 N.

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